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<tr class="t-nv"><td colspan="5"> <a href="iterator.html" title="cpp/header/iterator"><tt>&lt;iterator&gt;</tt></a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> 范围</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="ranges.html" title="cpp/header/ranges"><tt>&lt;ranges&gt;</tt></a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> 算法</td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="algorithm.html" title="cpp/header/algorithm"><tt>&lt;algorithm&gt;</tt></a></td></tr>
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<tr class="t-nv"><td colspan="5"> <a href="execution.html" title="cpp/header/execution"><tt>&lt;execution&gt;</tt></a></td></tr>
</table></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> 数值</td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="complex.html" title="cpp/header/complex"><tt>&lt;complex&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="random.html" title="cpp/header/random"><tt>&lt;random&gt;</tt></a></td></tr>
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<tr class="t-nv"><td colspan="5"> <a href="valarray.html" title="cpp/header/valarray"><tt>&lt;valarray&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="numeric.html" title="cpp/header/numeric"><tt>&lt;numeric&gt;</tt></a></td></tr>
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<tr class="t-nv"><td colspan="5"> <a href="bit.html" title="cpp/header/bit"><tt>&lt;bit&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="numbers.html" title="cpp/header/numbers"><tt>&lt;numbers&gt;</tt></a></td></tr>
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<tr class="t-nv"><td colspan="5"> <a href="cfenv.html" title="cpp/header/cfenv"><tt>&lt;cfenv&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="cmath.html" title="cpp/header/cmath"><tt>&lt;cmath&gt;</tt></a></td></tr>
</table></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> 输入/输出</td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="iosfwd.html" title="cpp/header/iosfwd"><tt>&lt;iosfwd&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="ios.html" title="cpp/header/ios"><tt>&lt;ios&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="iomanip.html" title="cpp/header/iomanip"><tt>&lt;iomanip&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="streambuf.html" title="cpp/header/streambuf"><tt>&lt;streambuf&gt;</tt></a></td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="istream.html" title="cpp/header/istream"><tt>&lt;istream&gt;</tt></a></td></tr>
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<tr class="t-nv"><td colspan="5"> <a href="iostream.html" title="cpp/header/iostream"><tt>&lt;iostream&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <br>
</td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="sstream.html" title="cpp/header/sstream"><tt>&lt;sstream&gt;</tt></a></td></tr>
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<tr class="t-nv"><td colspan="5"> <br>
</td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
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<tr class="t-nv"><td colspan="5"> <br>
</td></tr>
</table></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> 正则表达式</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="regex.html" title="cpp/header/regex"><tt>&lt;regex&gt;</tt></a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> 文件系统</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="filesystem.html" title="cpp/header/filesystem"><tt>&lt;filesystem&gt;</tt></a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> 线程支持</td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="thread.html" title="cpp/header/thread"><tt>&lt;thread&gt;</tt></a></td></tr>
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<tr class="t-nv"><td colspan="5"> <a href="mutex.html" title="cpp/header/mutex"><tt>&lt;mutex&gt;</tt></a></td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="shared_mutex.html" title="cpp/header/shared mutex"><tt>&lt;shared_mutex&gt;</tt></a></td></tr>
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<tr class="t-nv"><td colspan="5"> <a href="stop_token.html" title="cpp/header/stop token"><tt>&lt;stop_token&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="semaphore.html" title="cpp/header/semaphore"><tt>&lt;semaphore&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <br>
</td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="latch.html" title="cpp/header/latch"><tt>&lt;latch&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/header/barrier&amp;action=edit&amp;redlink=1" class="new" title="cpp/header/barrier（页面不存在）"><tt>&lt;barrier&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <br>
</td></tr>
</table></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> C 兼容</td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="ciso646.html" title="cpp/header/ciso646"><tt>&lt;ciso646&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="cstdalign.html" title="cpp/header/cstdalign"><tt>&lt;cstdalign&gt;</tt></a></td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
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<tr class="t-nv"><td colspan="5"> <a href="ccomplex.html" title="cpp/header/ccomplex"><tt>&lt;ccomplex&gt;</tt></a></td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="ctgmath.html" title="cpp/header/ctgmath"><tt>&lt;ctgmath&gt;</tt></a></td></tr>
<tr class="t-nv"><td colspan="5"> <br>
</td></tr>
</table></div></td></tr>
</table></div><div></div></div></div></div><div class="t-navbar-sep"> </div></div>
<p>此头文件是<a href="../types.html" title="cpp/types">类型支持</a>库的一部分。
</p>
<h3><span class="mw-headline" id=".E5.A3.B0.E6.98.8E">声明</span></h3>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="../types/numeric_limits.html" title="cpp/types/numeric limits"> <span class="t-lines"><span>numeric_limits</span></span></a></div></div>
</td>
<td>   提供查询所有基础数值类型的性质的接口。 <br> <span class="t-mark">(类模板)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="../types/numeric_limits/float_round_style.html" title="cpp/types/numeric limits/float round style"> <span class="t-lines"><span>float_round_style</span></span></a></div></div>
</td>
<td>   指示浮点舍入模式 <br> <span class="t-mark">(枚举)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="../types/numeric_limits/float_denorm_style.html" title="cpp/types/numeric limits/float denorm style"> <span class="t-lines"><span>float_denorm_style</span></span></a></div></div>
</td>
<td>   指示浮点非规格化模式 <br> <span class="t-mark">(枚举)</span> </td></tr>
</table>
<h3><span class="mw-headline" id=".E6.A6.82.E8.A6.81">概要</span></h3>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">namespace</span> std <span class="br0">{</span>
    <span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy4">;</span>
 
    <span class="kw2">enum</span> float_round_style <span class="br0">{</span>
        round_indeterminate         <span class="sy1">=</span> <span class="sy2">-</span><span class="nu0">1</span>,
        round_toward_zero           <span class="sy1">=</span>  <span class="nu0">0</span>,
        round_to_nearest            <span class="sy1">=</span>  <span class="nu0">1</span>,
        round_toward_infinity       <span class="sy1">=</span>  <span class="nu0">2</span>,
        round_toward_neg_infinity   <span class="sy1">=</span>  <span class="nu0">3</span>,
    <span class="br0">}</span><span class="sy4">;</span>
 
    <span class="kw2">enum</span> float_denorm_style <span class="br0">{</span>
        denorm_indeterminate <span class="sy1">=</span> <span class="sy2">-</span><span class="nu0">1</span>,
        denorm_absent        <span class="sy1">=</span>  <span class="nu0">0</span>,
        denorm_present       <span class="sy1">=</span>  <span class="nu0">1</span>
    <span class="br0">}</span><span class="sy4">;</span>
 
 
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">bool</span><span class="sy1">&gt;</span><span class="sy4">;</span>
 
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">char</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">signed</span> <span class="kw4">char</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">char</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span>char8_t<span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">char16_t</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">char32_t</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">wchar_t</span><span class="sy1">&gt;</span><span class="sy4">;</span>
 
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">short</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">int</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">long</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">long</span> <span class="kw4">long</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">short</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">int</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">long</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">long</span> <span class="kw4">long</span><span class="sy1">&gt;</span><span class="sy4">;</span>
 
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">float</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">double</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">long</span> <span class="kw4">double</span><span class="sy1">&gt;</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p><br>
</p>
<h4><span class="mw-headline" id=".E7.B1.BB.E6.A8.A1.E6.9D.BF_std::numeric_limits">类模板 <span class="t-lc"><a href="../types/numeric_limits.html" title="cpp/types/numeric limits">std::numeric_limits</a></span></span></h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span> <span class="kw1">class</span> numeric_limits <span class="br0">{</span>
<span class="kw1">public</span><span class="sy4">:</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_specialized <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> T min<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> T<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> T max<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> T<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> T lowest<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> T<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="br0">}</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> digits <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> digits10 <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> max_digits10 <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_signed <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_integer <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_exact <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> radix <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> T epsilon<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> T<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> T round_error<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> T<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="br0">}</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> min_exponent <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> min_exponent10 <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> max_exponent <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> max_exponent10 <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> has_infinity <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> has_quiet_NaN <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> has_signaling_NaN <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> float_denorm_style has_denorm <span class="sy1">=</span> denorm_absent<span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> has_denorm_loss <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> T infinity<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> T<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> T quiet_NaN<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> T<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> T signaling_NaN<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> T<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> T denorm_min<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> T<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="br0">}</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_iec559 <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_bounded <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_modulo <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> traps <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> tinyness_before <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> float_round_style round_style <span class="sy1">=</span> round_toward_zero<span class="sy4">;</span>
 
<span class="br0">}</span><span class="sy4">;</span></pre></div></div>
<h4><span class="mw-headline" id="std::numeric_limits.3Cbool.3E_.E7.89.B9.E5.8C.96"><span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../types/numeric_limits.html"><span class="kw344">std::<span class="me2">numeric_limits</span></span></a><span class="sy1">&lt;</span><span class="kw4">bool</span><span class="sy1">&gt;</span></span></span> 特化</span></h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">class</span> numeric_limits<span class="sy1">&lt;</span><span class="kw4">bool</span><span class="sy1">&gt;</span> <span class="br0">{</span>
<span class="kw1">public</span><span class="sy4">:</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_specialized <span class="sy1">=</span> <span class="kw2">true</span><span class="sy4">;</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> min<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> <span class="kw2">false</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> max<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> <span class="kw2">true</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> lowest<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> <span class="kw2">false</span><span class="sy4">;</span> <span class="br0">}</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> digits <span class="sy1">=</span> <span class="nu0">1</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> digits10 <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> max_digits10 <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_signed <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_integer <span class="sy1">=</span> <span class="kw2">true</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_exact <span class="sy1">=</span> <span class="kw2">true</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> radix <span class="sy1">=</span> <span class="nu0">2</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> epsilon<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> <span class="nu0">0</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> round_error<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> <span class="nu0">0</span><span class="sy4">;</span> <span class="br0">}</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> min_exponent <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> min_exponent10 <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> max_exponent <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">int</span> max_exponent10 <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> has_infinity <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> has_quiet_NaN <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> has_signaling_NaN <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> float_denorm_style has_denorm <span class="sy1">=</span> denorm_absent<span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> has_denorm_loss <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> infinity<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> <span class="nu0">0</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> quiet_NaN<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> <span class="nu0">0</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> signaling_NaN<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> <span class="nu0">0</span><span class="sy4">;</span> <span class="br0">}</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> denorm_min<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="br0">{</span> <span class="kw1">return</span> <span class="nu0">0</span><span class="sy4">;</span> <span class="br0">}</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_iec559 <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_bounded <span class="sy1">=</span> <span class="kw2">true</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> is_modulo <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
 
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> traps <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> tinyness_before <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
    <span class="kw4">static</span> <span class="kw4">constexpr</span> float_round_style round_style <span class="sy1">=</span> round_toward_zero<span class="sy4">;</span>
 
<span class="br0">}</span><span class="sy4">;</span></pre></div></div>

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